The essence of logistics management is to manage the entire logistics process to achieve two goals: reducing costs and improving service levels. How to ensure that the right customers receive the right products at the right time and place with the right capital and conditions has become the highest goal pursued by logistics enterprises. Generally speaking, the value of a company's inventory accounts for about 25% of its total assets and over 50% of its active assets. So the center of logistics management work is the management of inventory in the supply chain.
In terms of transportation management, RFID technology is used, which only requires the installation of electronic tags on the outer packaging of goods and the installation of readers at transportation checkpoints or transfer stations to achieve visual management of assets. At the same time, shippers can access the in transit visualization webpage based on their permissions to understand the detailed location of goods, which is of great significance for improving the service level of logistics enterprises.
The fast scanning RFID identifier can simultaneously identify and read multiple RFID tags! Small size and diversified appearance. RFID reading is not limited by size or appearance, and does not require matching the fixed size and printing quality of paper for reading accuracy. In addition, RFID tags can be miniaturized and diversified to be applied to different products. Anti pollution ability and durability. The carrier of traditional barcodes is paper, which is prone to contamination, but RFID has strong resistance to substances such as water, oil, and chemicals. In addition, since barcodes are attached to plastic bags or outer packaging cartons, they are particularly susceptible to breakage; RFID tags store data in chips, thus avoiding contamination. After the current barcode is printed, it cannot be changed, while RFID tags can repeatedly add, correct, and delete data stored in the RFID label, making it easier to update information. Penetrating and barrier free reading. Under cover, RFID can penetrate non-metallic or non transparent materials such as paper, wood, and plastic, and can stop penetrating communication. The barcode scanner must be in close proximity and unobstructed by objects to be able to read barcodes. The memory capacity of data is large. The capacity of one-dimensional barcodes is 50 bytes, the maximum capacity of two-dimensional barcodes can store 2 to 3000 characters, and the maximum capacity of RFID is several Megabytes. With the development of memory carriers, the data capacity also tends to expand from time to time. In the future, the amount of materials required to carry items will continue to increase, and the demand for expanding the capacity of labels will also correspondingly increase. Due to the fact that RFID carries electronic information, its data content can be maintained through passwords, making it less susceptible to forgery and alteration.

The basic working modes of RFID systems are divided into full duplex and half duplex systems, as well as sequential (SEQ) systems. Full duplex means that RF tags and readers can simultaneously transmit information to each other. Half duplex RF tags and readers can transmit information bidirectionally, but can only transmit information unidirectionally at the same time.

In full duplex and half duplex systems, the response of RF tags is emitted under the electromagnetic field or waves emitted by the reader. The signal of the RF tag is relatively weak compared to the signal of the reader itself on the receiving antenna, so it is necessary to use an appropriate transmission method to distinguish between the signal of the RF tag and the signal of the reader. In practice, people generally use load reflection modulation technology to load the RF tag data onto the reflected echo when transmitting data from the RF tag to the reader (especially for passive RF tag systems).

On the contrary, the temporal method involves the periodic short-term interruption of the electromagnetic field radiated by the reader. These intervals are identified by radio frequency tags and used for data transmission from the radio frequency tags to the reader. Actually, this is a typical radar working mode. The disadvantage of the timing method is that when the reader intermittently sends, the energy supply to the RF tag is interrupted, and it must be compensated by installing a sufficiently large auxiliary capacitor or auxiliary battery.